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Figure 1

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Locations of the four RSTN network nodes. The station codes of the four RSTN locations are as follows: LRM – Learmonth Australia, SAVO – San Vito Italy, SAGA – Sagamore Hill Massachusetts USA, K70L-Kaena Point Hawaii. Data files from an additional older site at Palehua Hawaii are also available. Image retrieved from the NOAA RSTN documentation section at https://www.ngdc.noaa.gov/stp/space-weather/solar-data/solar-features/solar-radio/rstn-1-second/documentation/browse_rstn.jpg.

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